Question 1132685
The volume of our sun is:
{{{ V[s] = (4/3)*pi*r^3 }}}
{{{ V[s] = (4/3)*pi*( 7*10^5 )^3 }}}
{{{ V[s] = (4/3)*pi*343*10^15 }}}
{{{ V[s] = 457.333*pi*10^15 }}}
{{{ V[s] = 1436.755*10^15 }}}
{{{ V[s] = 1.436755*10^21 }}} km3
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1 m3 = {{{ 10^(-9) }}} km3
[ kg/m3 ] x [ m3 / km3 ] = kg/km3
The sun's density is:
{{{ 1.4*10^3*10^9 }}} kg/km3
{{{ 1.4*10^12 }}} kg/km3
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The sun's mass is:
{{{ 1.4*10^12*1.436755*10^21 }}}
{{{ 2.011457*10^33 }}} kg
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{{{ 10^3 }}} suns have a mass:
{{{ 2.011457*10^36 }}} kg
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To finish, find volume of the moon in km3
Using {{{ V[m] = (4/3)*pi*r^3 }}}
and divide mass in km to get density in
kg/km3, then use the conversion:
[ kg/km3 ] x [ 1000 g / kg ] x [ 1 km3 / 10^9 m3 ] x [ 1 m3 / 10^6 cm3 ]